Question

The vector c directed along the bisectors of the angle between the vectors a = 7i – 4j – 4k and b = – 2i – j + 2k, where |c| = 3√6 is given by 

(a) i – 7j + 2k 

(b) i + 7j – 2k 

(c) –i + 7j – 2k

(d) i – 7j – 2k

Answer 1

Answer is (a) (i – 7j + 2k)

Explanation:

According to the question,

It is given that,

= ±(i – 7j + 2k)